Hagen Fluval 406/407 Bio-Foam Max filter block effectively traps large particles and debris and promotes beneficial bacteria growth. Designed for use with Fluval Canister Filters 406 and 407. Replace every 6 months. Contains 2 filter blocks.
- 30% more surface area than traditional Bio-foam media
- Porous construction promotes beneficial bacteria growth
- Rippled surface helps maintain even water flow
- For use in fresh and salt water aquariums